Re: Multipart/alternate as root in Multipart/related

Keith Moore (
Wed, 22 Nov 1995 23:20:34 -0500

Message-Id: <>
From: Keith Moore <>
To: Larry Masinter <>
Subject: Re: Multipart/alternate as root in Multipart/related 
In-Reply-To: Your message of "Wed, 22 Nov 1995 20:07:51 PST."
Date: Wed, 22 Nov 1995 23:20:34 -0500

> For what it's worth, I'm strongly opposed to the notion that a mail
> recipient might put some part of a mail message into a web cache. A
> cache is a cache. A mail recipient interpreting a multipart message
> might treat included parts with a disposition URI as surrogates for
> the named parts FOR THE CONTEXT OF THAT MESSAGE, but in lieu of a
> stronger security context, interaction with the web browser's cache is
> a bad idea.

When I proposed that a mail message include cached copies of documents,
I was assuming that the mail message would include the same data structures
that a web browser would obtain from a catalog server, including 
any authenticity and integrity provided by the catalog info server
as well as an expiration date.  I agree that the security features
are essential before such a mechanism is deployed, but it doesn't 
make any difference whether the data is emailed or retrieved from
a catalog info server.